Deus Ex: Human Revolution Easter Egg - #chan

*Spoilers Ahead!*

1. Once you arrive in Hengsha, you will get the opportunity to start the side-quest "Shanghai Justice".

2. At one point in the quest, you will be instructed to visit a LIMB clinic to talk to a man named "Anonymous X".

3. Once you arrive, you will see that he has a hat with "#Chan" on it.

This is an obvious reference to the Chan message boards (4chan, 7chan, 420chan, etc.) and their "anonymous" community.